CORTOOL Large HSS Spiral Groove Step Drill Bit, 10 Sizes Cobalt Added High Speed Steel 14 to 2 Drill Bit for Sheet Aluminium Metal Wood Hole Drilling, Big Multiple Hole Stepped Up Bit for DIY

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  • The spiral dual-flute design prevents metal fillings from flying around and clears chips faster thus it can drill more smoothly without heating up.
  • The rapid strike tip drills twice as fast as the average step drills and can drill acrylic, PVC, wood, aluminum and iron sheets up to 0.2 in thickness.
  • 10 hole sizes 1 4; 3 8; 19 32; 3 4; 1'; 1'3 16; 1'3 8; 1'5 8; 1'3 4; 2'.

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